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using System;

namespace Problem_04___Game_Of_Intervals
{
    class Program
    {
        static void Main(string[] args)
        {
            var n = int.Parse(Console.ReadLine());

            var height = 4 * n - 2;
            var width = 12 * n - 5;


            for (int i = 1; i <= 2 * n; i++)
            {
                var numberOfHashTag = i * 6 - 5;
                var numberOfDots = (width - numberOfHashTag) / 2;
                Console.Write(new string('.', numberOfDots));
                Console.Write(new string('#', numberOfHashTag));
                Console.WriteLine(new string('.', numberOfDots));
            }

            var numberOfDotsInSecondHalf = 3;
            for (int i = 0; i < n - 2; i++)
            {
                var numberOfDieses = width - numberOfDotsInSecondHalf * 2;
                Console.Write("|");
                Console.Write(new string('.', numberOfDotsInSecondHalf - 1));
                Console.Write(new string('#', numberOfDieses));
                Console.WriteLine(new string('.', numberOfDotsInSecondHalf));
                numberOfDotsInSecondHalf += 3;
            }

            for (int i = 0; i < n - 1; i++)
            {
                var numberOfDieses = width - numberOfDotsInSecondHalf * 2;
                Console.Write("|");
                Console.Write(new string('.', numberOfDotsInSecondHalf - 1));
                Console.Write(new string('#', numberOfDieses));
                Console.WriteLine(new string('.', numberOfDotsInSecondHalf));
            }

            var numberOfDiesesPesho = width - numberOfDotsInSecondHalf * 2;
            Console.Write("@");
            Console.Write(new string('.', numberOfDotsInSecondHalf - 1));
            Console.Write(new string('#', numberOfDiesesPesho));
            Console.WriteLine(new string('.', numberOfDotsInSecondHalf));
        }
    }
}